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@geiten gisten gamut @fitta Letters Patent No. 80,911, dated August 11, 1868.

IMPROVEMENT IN OIL-CUPS FOR STEAM-ENGINES.

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'lO ALL WIIOM IT MAY CONCERN:

Be it known that I, JOHN C. CARROLL, of Litchfield, in the eounty'ot` Montgomery, and State of Illinois, have made certain new and useful Improvements in Oil-Cups for Engines; and I de hereby declare that the following is a full and clear description thereof, reference being Yhad to the accompanying drawings,rand to the letters of reference marked thereon.

The object of this invention is to construct an oil-cup through which to lubricateA the pistons of steamengnes in such a manner as toavoid any unnecessary waste of oil or tallow used in the lubrication.

The invention relates, rstly, to a doubleseated valve, or, rather, pair of valves, in combination. with an intervening measuring-chamber, which allows a certain fixed quantity of4 the lubricating-material to'pass downJ to the cylinder at each opening et' the valves.

'Ihe second feature of the invention relates to a device for closing and operating the valve from the engine-cab. vTo enable those skilled in the art to make and use my improved oil-cup, I will proceed to describe its constructionand operation.

Figure l of the accompanying drawings is a centralV sectional elevation of one of the improved oil-cups. Figure 2 is a plan of the same, showing the device for operating the cup-valves from the engine-cab. The exterior of the cup A may be ot' any of the usuaLforms, and its" base is to be provided with screw-V threads at a, by means of which to attach it to the cylinder or steam-chest.

The necking al, at the base of the cup, has a tubular cavity, which extends up into the cup, and conducts the lubricating-material down into the cylinder or steam-chest.

The central part of the tubular cavity b is enlarged, at b1, into a chamber of suicient capacity to hold enough of the lubricating-material for one lubrication of the piston.

A valve-rocLAB, passes from the bottom to the top of the cavity Ib, and carries on its ends 4the valves B1 B2, that are arranged to shut tightly on their seats at b2 63.

A continuation of the valve-rod, 6*, extends above the valve B2, and passes through the top of the oil-cup, above which it is attached to the knob B3.

The cover, A, of the cup has a nut, A2, which screws down into the rai-l A3, within the cup, and thus: secures the cover in place.

The rod b passes loosely through the nut A2, which may be screwed up or down without operating the rod, when the rod is disconnected from the knob B3.

A little play, say a sixteenth of an inch, should be allowed between the top of the cover Al, when it is screwed down, and the bottom of the knob B3.

When the knob B3 is attached to the knob b, by means of the rivet b5, the cap A1 may be unscrewed until lit strikes the bottom of the knob B3, and raises it, and with it the rods and B, thereby raising thc valve Bl closely up to its seat, and closing the exit from the lubricating-chamber.

A lever, A", is secured to the top ot' the cover A1, for the purpose of turning it, and to the outer end of this lever, a rod or cord is to be attached, so that it may be operated from the cab of a locomotive.

The cover Al should be' provided with a ange, ai, around 'the lower edge of its periphery, so as to overlapv the edge of the cup and form a tight connection therewith, and also with an aperture, a3, for the introduction of the lubricating-material into the cup.

The valve-rod B is made hollow, as shown in iig. 1, the cavity b extending up into the said rod from the bottom end thereof tov a point at or above the valve B2. This cavity permits the steam from the cylinder to pass up into the stem, and heat the oil or tallow in the surrounding cups, s o as `to liouefy it in cold Weather.

The tube Z1 extends up into the oil-vessel as far as the dotted line :1J-x, which should be from one-half inch to one inch, (more or less,) as shown in tig. 1, thus leaving the annular sediment-chamber x-x, surrounding the top end ofthe tube. Into this chamber the sediment of the grease will subside without passing into thepiston.

A stop-cock (not shown) might be used to draw off the sediment from this cavity.

For some engines, the valves Vmight be left to oct automatically, bythe pressure of the steam on the bottom valve holding it closed when the engine is running, and allowing it to open when steam is shut off, the chamber b1 filling at cach operation of the valves, and allowing a certain fixed quantity of lubrication to pass through.

In other engines, however, where frequent stops were mede, it might be necessary touse the lever A4 and screw oop, as hereinbefore described.

Having described my invention, what I claim, isv '1. Theoil-cup A, when provided with double valves Bl B2, and :1n-intervening measuring-chamber, bl, substantally as herein shown and described.

2. The combination und `arrangement of the screw-cap A1, lever A4, and valve-rods B 6*, substantially as described and set forth.

In testimony of which invention, I hereunto sot my hand, in presence of- JOI-IN C. CARROLL. Witnesses:

M. RANDOLPH, GEO. P. HEnTuEL,J1-. 

